I have only ever had issues like that when I worked on an actual Python checker where I had to keep BAD code in my tests to ensure the checks worked. I've neve

I have only ever had issues like that when I worked on an actual Python checker where I had to keep BAD code in my tests to ensure the checks worked. I've never ( read 99.999% of the time I've performed the task ) had issues with Python formatting that weren't my own fault, everyone makes mistakes after all. I routinely edit the same Python files in Vim, Nano, Sublime Text, Atom, and PyCharm, and even jumping between all those editors, they have never "damaged" the formatting and created syntax errors in my code. I can only surmise that some of the things you used or even just your vim config was setup poorly for Python work.